Salina, NY -- A New York state trooper was critically injured Monday night when a tractor-trailer struck his patrol car on the Thruway in the city of Amsterdam, state police said in a news release.

The name of the trooper has not been released.

The driver of the tractor-trailer, Gary Blakley, 65, of Ridgeway, Ontario, was heading east on Interstate 90 in Amsterdam, Montgomery County, when the crash happened, state police said. Blakley was not hurt, troopers said.

A third vehicle also was involved in the crash, state police said. The driver of that vehicle, Eric Heller, 57, of Stoney Creek, was taken to Albany Medical Center, the news release said. Heller's condition was not immediately known.

State police closed a large section of the Thruway following the crash at 8:24 p.m. Monday. Anyone traveling eastbound on the New York State Thruway is being diverted off Exit 36 in Salina. The detour takes drivers onto Interstate 81 South to Interstate 88 East. Motorists should follow signs on I-88 East to return to I-90 at Exit 25A in Schenectady, state police said.